General Description
The XC6367/68 series are multi-functional step-up DC/DC converter controllers with built-in high speed, low ON resistance
drivers.
High efficiency is possible using an externally connected transistor, coil, diode and capacitor.
Output voltage is selectable in 100mV increments within a range of 1.5V ~ 6.5V (±2.5%). For output voltages outside this
range, we recommend FB version, which has a 1.0V internal reference voltage. Using the FB version, the required output
voltage can be set-up using 2 external resistors.
With a 300kHz oscillation frequency, the size of the external components can be reduced.
Control switches from PWM to PFM during light loads with the XC6368 (PWM/PFM switchable) and the series is highly
efficient from light loads to large output currents.
Soft start time of XC6367/68A, B, and E series is internally set to 10msec and XC6367/68C, D, and F series regulate soft-start
time by connecting resistors and capacitors externally.
During stand-by (CE pin "Low"), supply current is reduced to less than 0.5μA.
Features
- Input Voltage Range : 0.9V ~ 10V
- Operating Voltage Range : 2.0V ~ 10V
- Output voltage Range : 1.5V ~ 6.5V programmable in
100mV increments (±2.5%)
- Oscillation Frequency : 300kHz, 100kHz (±15%)
Custom products for 180kHz, 500kHz
- Output Current : More than 200mA
(VIN=1.8V, VOUT=3.3V)
- High Efficiency : 84% (TYP.)
- Stand-by capability : ISTB=0.5μA (MAX.)
- Selection : Soft-start set-up external
Output voltage set-up internal (VOUT)
Output voltage set-up external (FB)
Applications
- Electronic information organizers
- Palmtops
- Cellular and portable phones
- Portable audio systems
- Various multi-function power supplies
Typical Application Circuit
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